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这个是怎么回事啊?#include <iostream>
#define N 100000
using namespace std;
int Fdata[N]={0,1,1,2};
int fib(int n)
{
int tmp1,tmp2;//////用G++把这个放在全局变量里就会很诡异,tmp2会覆盖tmp2。
if(n<N&&Fdata[n]!=0)
return Fdata[n];
if(n==0)
return 0;
if(n%2==0)
{
tmp1=(fib(n/2-1)+fib(n/2+1))*fib(n/2);
tmp1%=10000;
}
else
{
tmp1=fib((n+1)/2);
tmp2=fib((n-1)/2);
if(tmp1==tmp2)
cout<<"what!"<<endl;
tmp1=tmp1*tmp1+tmp2*tmp2;
tmp1%=10000;
}
if(n<N)Fdata[n]=tmp1;
return tmp1;
}
int main()
{
int n;
while(cin>>n)
{
if(n==-1)break;
cout<<fib(n)<<endl;
}
return 0;
}
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